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Humboldt WWTF

Sewage treatment plant, Humboldt, Nebraska. NPDES permit NE0031844, in force until Dec 31, 2026. Last 12 months: over a limit 47 times (last June 2026), 18 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M quarterly (20 values), outfall 001 form Q quarterly (4 values), outfall INF form A yearly, outfall SLG form A yearly
Renewal application due
Jul 4, 2026 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
70 values over a limit, 0 required values missing, 6 of 18 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 47 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum10.2 mg/L≤ 4.74 mg/L115%
October 2025Nitrogen, ammonia total [as N], daily maximum3 kg/d≤ 2.15 kg/d40%
October 2025Nitrogen, ammonia total [as N], monthly average10.2 mg/L≤ 2.36 mg/L332%
October 2025Nitrogen, ammonia total [as N], monthly average3 kg/d≤ 1.07 kg/d180%
November 2025BOD, carbonaceous [5 day, 20 C], 7-day average46.7 mg/L≤ 40 mg/L17%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average46.7 mg/L≤ 25 mg/L87%
November 2025Nitrogen, ammonia total [as N], daily maximum13.1 mg/L≤ 4.23 mg/L210%
November 2025Nitrogen, ammonia total [as N], daily maximum4.6 kg/d≤ 1.7 kg/d171%
November 2025Nitrogen, ammonia total [as N], monthly average13.1 mg/L≤ 2.11 mg/L521%
November 2025Nitrogen, ammonia total [as N], monthly average4.6 kg/d≤ .85 kg/d441%
November 2025Solids, total suspended, 7-day average52 mg/L≤ 45 mg/L16%
November 2025Solids, total suspended, monthly average52 mg/L≤ 30 mg/L73%
December 2025Nitrogen, ammonia total [as N], daily maximum15.7 mg/L≤ 4.23 mg/L271%
December 2025Nitrogen, ammonia total [as N], daily maximum3.8 kg/d≤ 1.7 kg/d124%
December 2025Nitrogen, ammonia total [as N], monthly average15.7 mg/L≤ 2.11 mg/L644%
December 2025Nitrogen, ammonia total [as N], monthly average3.8 kg/d≤ .85 kg/d347%
December 2025Solids, total suspended, monthly average36 mg/L≤ 30 mg/L20%
January 2026BOD, carbonaceous [5 day, 20 C], 7-day average62.8 mg/L≤ 40 mg/L57%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average62.8 mg/L≤ 25 mg/L151%
January 2026Nitrogen, ammonia total [as N], daily maximum16.4 mg/L≤ 4.23 mg/L288%
January 2026Nitrogen, ammonia total [as N], daily maximum4.96 kg/d≤ 1.7 kg/d192%
January 2026Nitrogen, ammonia total [as N], monthly average16.4 mg/L≤ 2.11 mg/L677%
January 2026Nitrogen, ammonia total [as N], monthly average4.96 kg/d≤ .85 kg/d484%
January 2026Solids, total suspended, 7-day average74 mg/L≤ 45 mg/L64%
January 2026Solids, total suspended, monthly average74 mg/L≤ 30 mg/L147%
February 2026Nitrogen, ammonia total [as N], daily maximum15.6 mg/L≤ 4.23 mg/L269%
February 2026Nitrogen, ammonia total [as N], daily maximum4.72 kg/d≤ 1.7 kg/d178%
February 2026Nitrogen, ammonia total [as N], monthly average15.6 mg/L≤ 2.11 mg/L639%
February 2026Nitrogen, ammonia total [as N], monthly average4.72 kg/d≤ .85 kg/d455%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average44.7 mg/L≤ 40 mg/L12%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average44.7 mg/L≤ 25 mg/L79%
March 2026Nitrogen, ammonia total [as N], daily maximum15.6 mg/L≤ 11.12 mg/L40%
March 2026Nitrogen, ammonia total [as N], monthly average15.6 mg/L≤ 5.54 mg/L182%
March 2026Nitrogen, ammonia total [as N], monthly average4.54 kg/d≤ 2.43 kg/d87%
May 2026E. coli, MTEC-MF, daily maximum> 2419.6 #/100mL≤ 298 #/100mL—
May 2026E. coli, MTEC-MF, monthly geometric mean> 2419.6 #/100mL≤ 126 #/100mL—
May 2026Nitrogen, ammonia total [as N], daily maximum12.6 mg/L≤ 11.12 mg/L13%
May 2026Nitrogen, ammonia total [as N], daily maximum5.1 kg/d≤ 4.88 kg/d5%
May 2026Nitrogen, ammonia total [as N], monthly average12.6 mg/L≤ 5.54 mg/L127%
May 2026Nitrogen, ammonia total [as N], monthly average5.1 kg/d≤ 2.43 kg/d110%
May 2026pH, daily maximum10.08 SU≤ 9 SU—
June 2026E. coli, MTEC-MF, daily maximum2420 #/100mL≤ 298 #/100mL712%
June 2026E. coli, MTEC-MF, monthly geometric mean2420 #/100mL≤ 126 #/100mL1821%
June 2026Nitrogen, ammonia total [as N], daily maximum10.8 mg/L≤ 4.74 mg/L128%
June 2026Nitrogen, ammonia total [as N], daily maximum3.43 kg/d≤ 2.15 kg/d60%
June 2026Nitrogen, ammonia total [as N], monthly average10.8 mg/L≤ 2.36 mg/L358%
June 2026Nitrogen, ammonia total [as N], monthly average3.43 kg/d≤ 1.07 kg/d221%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 23.28 kg/dall year001
Solids, total suspended7-day average≤ 34.92 kg/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 2.11 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5.54 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ 2.36 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 4.23 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 11.12 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 4.74 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .85 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.43 kg/dMar–May001
Nitrogen, ammonia total [as N]monthly average≤ 1.07 kg/dJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 1.7 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.88 kg/dMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 2.15 kg/dJun–Oct001
Phosphate, poly [as PO4]monthly averagereport only (mg/L)all year001
Phosphate, poly [as PO4]daily maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLMay–Sep001
E. coli, MTEC-MFdaily maximum≤ 298 #/100mLMay–Sep001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 19.4 kg/dall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 31.04 kg/dall year001
pHvaluereport only (SU)all yearINF
Solids, total suspendedvaluereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantvaluereport only (MGD)all yearINF
BOD, carbonaceous [5 day, 20 C]valuereport only (mg/L)all yearINF
pHvaluereport only (SU)all yearSLG
Nitrate nitrogen, dry weightvaluereport only (mg/kg)all yearSLG
Selenium, sludge, total, dry weight [as Se]valuereport only (mg/kg)all yearSLG
Arsenic total, dry weight, sludgevaluereport only (mg/kg)all yearSLG
Molybdenum, sludge, total, dry weight [as Mo]valuereport only (mg/kg)all yearSLG
Zinc, sludge, total, dry weight [as Zn]valuereport only (mg/kg)all yearSLG
Lead, sludge, total, dry weight [as Pb]valuereport only (mg/kg)all yearSLG
Nickel, sludge, total, dry weight [as Ni]valuereport only (mg/kg)all yearSLG
Nitrogen, sludge, total, dry weight [as N]valuereport only (mg/kg)all yearSLG
Mercury, sludge, total, dry weight [as Hg]valuereport only (mg/kg)all yearSLG
Chromium, sludge, total, dry weight [as Cr]valuereport only (mg/kg)all yearSLG
Copper, sludge, total, dry weight [as Cu]valuereport only (mg/kg)all yearSLG
Cadmium, sludge, total, dry weight [as Cd]valuereport only (mg/kg)all yearSLG
Solids, sludge, total, dry weightvaluereport only (kg)all yearSLG
Nitrogen, ammonia, sludge, tot dry wgtvaluereport only (mg/kg)all yearSLG

How strict are these limits?

Cited limits by parameter: Nebraska's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NE0031844 · MCP: https://passage-data.com/mcp